Populations of rotating stars. - I. Models from 1.7 to 15 Msun at Z = 0.014, 0.006, and 0.002 with Ω/Ωcrit between 0 and 1

Abstract

B-type stars are known to rotate at various velocities, including very fast rotators near the critical velocity as the Be stars. In this paper, we provide stellar models covering the mass range between 1.7 to 15 Msun, which includes the typical mass of known Be stars, at Z = 0.014, 0.006, and 0.002 and for an extended range of initial velocities on the zero-age main sequence. We used the Geneva stellar-evolution code, including the effects of shellular rotation, with a numerical treatment that has been improved so the code can precisely track the variation in the angular momentum content of the star as it changes under the influence of radiative winds and/or mechanical mass loss. We discuss the impact of the initial rotation rate on the tracks in the Hertzsprung-Russell diagram, the main-sequence (MS) lifetimes, the evolution of the surface rotation and abundances, as well as on the ejected masses of various isotopes. Among the new results obtained from the present grid we find that 1) fast-rotating stars with initial masses around 1.7 Msun present at the beginning of the core hydrogen-burning phase quite small convective cores with respect to their slowly rotating counterparts. This fact may be interesting to keep in mind in the framework of the asteroseismic studies of such stars. 2) The contrast between the core and surface angular velocity is higher in slower rotating stars. The values presently obtained are in agreement with the very few values obtained for B-type stars from asteroseismology. 3) At Z = 0.002, the stars in the mass range of 1.7 to 3 Msun with a mean velocity on the MS of the order of 150 km/s show N/H enhancement superior to 0.2 dex at mid-MS, and superior to 0.4 dex at the end of the MS phase. At solar metallicity the corresponding values are below 0.2 dex at any time in the MS.

17 pages, 12 figures. Accepted for publication in A&A

References in corpus (1)

• On the Determination of the Rotational Oblateness of Achernar

Cited by in corpus (87)

• Probing the interior physics of stars through asteroseismology
• Internal mixing of rotating stars inferred from dipole gravity modes
• A luminous, blue progenitor system for a type-Iax supernova
• Bayesian Ages for Early-Type Stars from Isochrones Including Rotation, and a Possible Old Age for the Hyades
• Evolution of surface CNO abundances in massive stars
• Grids of stellar models with rotation IV. Models from 1.7 to 120 Msun at a metallicity Z = 0.0004
• The mass discrepancy in intermediate- and high-mass eclipsing binaries: the need for higher convective core masses
• Apparent Age Spreads in Clusters and the Role of Stellar Rotation
• Populations of rotating stars II. Rapid rotators and their link to Be-type stars
• A Volume Limited Survey of mCP Stars Within 100pc II: Rotational and Magnetic Properties
• Multiple stellar populations in Magellanic Cloud clusters. IV. The double main sequence of the young cluster NGC1755
• Extended Main Sequence Turnoffs in Open Clusters as Seen by Gaia: I. NGC 2818 and the Role of Stellar Rotation
• Rotating Stellar Models Can Account for the Extended Main Sequence Turnoffs in Intermediate Age Clusters
• Fundamental properties of nearby single early B-type stars
• The life cycles of Be viscous decretion discs: fundamental disc parameters of 54 SMC Be stars
• The extended Main Sequence Turn Off cluster NGC1856: rotational evolution in a coeval stellar ensemble
• NGC 1866: First Spectroscopic Detection of Fast Rotating Stars in a Young LMC Cluster
• The evolution of Red Supergiants to supernova in the LMC cluster NGC 2100
• The life cycles of Be viscous decretion discs: time-dependent modelling of infrared continuum observations
• An Investigation of the Rotational Properties of Magnetic Chemically Peculiar Stars
• The effects of rotation on the main-sequence turnoff of intermediate-age massive star clusters
• A Volume-Limited Survey of mCP Stars Within 100pc I: Fundamental Parameters and Chemical Abundances
• The Ages of A-Stars I: Interferometric Observations and Age Estimates for Stars in the Ursa Major Moving Group
• The Kappa Andromedae System: New Constraints on the Companion Mass, System Age & Further Multiplicity
• The puzzle of the CNO abundances of α Cygni variables resolved by the Ledoux criterion?
• Grids of stellar models with rotation: V. Models from 1.7 to 120 Msun at zero metallicity
• Line-driven ablation of circumstellar disks: I. Optically thin decretion disks of classical Oe/Be stars
• A new method for an objective, ${\chi }^2$-based spectroscopic analysis of early-type stars
• A Young Cluster With an Extended Main Sequence Turnoff: Confirmation of a Prediction of the Stellar Rotation Scenario
• Modeling the early evolution of massive OB stars with an experimental wind routine
• Angular momentum transport in massive stars and natal neutron star rotation rates
• The pseudo-photosphere model for the continuum emission of gaseous discs
• SPISEA: A Python-Based Simple Stellar Population Synthesis Code for Star Clusters
• Investigating Cepheid $\ell$ Carinae's Cycle-to-cycle Variations via Contemporaneous Velocimetry and Interferometry
• NGC 6067: a young and massive open cluster with high metallicity
• A realistic two-dimensional model of Altair
• A quantitative spectral analysis of 14 hypervelocity stars from the MMT survey
• B fields in OB stars (BOB): on the detection of weak magnetic fields in the two early B-type stars beta CMa and epsilon CMa
• Discovery of a 21 Myr old stellar population in the Orion complex
• Vetting Galactic Leavitt Law Calibrators using Radial Velocities: On the Variability, Binarity, and Possible Parallax Error of 19 Long-period Cepheids
• The surface magnetic field and chemical abundance distributions of the B2V helium-strong star HD184927
• First results from the LIFE project: discovery of two magnetic hot evolved stars
• A systematic study of effects of stellar rotation, age spread and binaries on color-magnitude diagrams with extended main-sequence turn-offs
• A Novel Approach to Constrain Rotational Mixing & Convective-Core Overshoot in Stars Using the Initial-Final Mass Relation
• Powerful CMD: A Tool for Colour-Magnitude Diagram Studies
• Discovery of magnetic A supergiants: the descendants of magnetic main sequence B stars
• Shock breakouts from red supergiants: analytical and numerical predictions
• Rotational Mixing in Be Stars: Nitrogen Abundances for a Sample of Be Stars from the MiMeS Survey
• Binary Black Hole Mergers within the LIGO Horizon: Statistical Properties and prospects for detecting Electromagnetic Counterparts
• SCExAO and GPI $YJH$ Band Photometry and Integral Field Spectroscopy of the Young Brown Dwarf Companion to HD 1160
• HD 35502: a hierarchical triple system with a magnetic B5IVpe primary
• Explanation of a special color-magnitude diagram of star cluster NGC 1651 from different models
• The flux-weighted gravity-luminosity relationship of blue supergiant stars as a constraint for stellar evolution
• A Strict Test of Stellar Evolution Models: The Absolute Dimensions of Massive Benchmark Eclipsing Binary V578 Mon
• Asteroseismology of the Hyades with K2: first detection of main-sequence solar-like oscillations in an open cluster
• The delay time distribution of supernovae from integral-field spectroscopy of nearby galaxies
• Influence of Rotation on Stellar Evolution
• SN 2018hti: a nearby superluminous supernova discovered in a metal-poor galaxy
• Outbursts and stellar properties of the classical Be star HD 6226
• The evolution of single B-type stars with a large angular momentum content
• Centrifugally Driven Mass Loss and Outbursts of Massive Stars
• The effects of the overshooting of the convective core on main-sequence turnoffs of young- and intermediate-age star clusters
• The massive multiple system HD 64315
• The study of unclassified B[e] stars and candidates in the Galaxy and Magellanic Clouds
• Short-term variability and mass loss in Be stars VI. Frequency groups in $\gamma$ Cas detected by TESS
• Blue extreme disk-runaway stars with Gaia EDR3
• The rotation of alpha Oph investigated using polarimetry
• Berkeley 51, a young open cluster with four yellow supergiants
• Oxygen abundance and the N/C vs N/O relation for AFG supergiants and bright giants
• The Lithium test for multiple populations in Globular Clusters: Lithium in NGC 2808
• Photospheric carbon and oxygen abundances of F-G type stars in the Pleiades cluster
• Exploring the stellar rotation of early-type stars in the LAMOST Medium-Resolution Survey. II. Statistics
• Binary-driven stellar rotation evolution at the main-sequence turn-off in star clusters
• BRITE observations of $\nu$ Centauri and $\gamma$ Lupi, the first non-eclipsing members of the new class of nascent binaries
• Cluster membership for the long period Cepheid calibrator SV Vul
• Dynamical detection of three triple stellar systems in open clusters
• Accurate absolute parameters of the binary system V4089 Sgr
• On the eclipsing binary ELHC 10 with occulting dark disc in the Large Magellanic Cloud
• The wide upper main sequence and main sequence turnoff of the ~ 800 Myr old star cluster NGC1831
• The Puzzling Spectrum of HD 94509
• Three nearby K-giants with planets: Accurate determination of basic parameters, including an analysis of metallicity based on Fe I lines
• Period Variations for the Cepheid VZ Cyg
• The evolution of magnetic fields in hot stars
• The NGC 346 massive star census: Nitrogen abundances for apparently single, narrow lined, hydrogen core burning B-type stars
• UBVI CCD Photometry of Berkeley 55 Open Cluster
• Abundance analysis of the supergiant stars HD 80057 and HD 80404 based on their UVES Spectra
• Massive stars: stellar models and stellar yields, impact on Galactic Archaeology